The big question: "For it is time for judgment to begin at the household of God; and if it begins with us, what will be the outcome for those who do not obey the gospel of God?" (1 Pet. 4:17).
"But as for Israel, He says, "ALL DAY LONG I HAVE STRETCHED OUT MY HANDS TO A DISOBEDIENT AND OBSTINATE PEOPLE" (Rom. 10:21). "The wrath of God comes upon the sons of disobedience" (Eph. 5:6). '...the spirit that is now at work in the sons of disobedience" (Eph. 2:2). For God has consigned all to disobedience, that he may have mercy on all" (Rom. 11:32).
Unbelievers are called disobedient but disobeying God after salvation doesn't make you a son of disobedience, but persistence in disobedience proves one isn't a child of God. "For I was not disobedient to the heavenly vision" (Acts 26:19). "Just as you were at one time disobedient to God but now have received mercy because of their disobedience" (Rom. 11:30). We are talking about being obedient to the faith and to the gospel.
A caveat in Scripture: "They stumble because they were disobedient to the Word, as they were destined to do" [This is called reprobation: cf. Jude 4 and 1 Thess. 5:9] (1 Pet. 2:7).
A pertinent promise: "If you are willing and obedient, you shall eat the good of the land" (Isa. 1:19).
A word to the wise: "For your obedience has become known to all..." (Rom. 16:19).
A challenge to those who stumble: "Who hindered you from obeying the truth?" (Gal. 5:7). The right attitude: "The LORD our God we will serve, and his voice we will obey" (Josh. 24:24). Priorities: "Obey those who rule over you..." (Heb. 13:17). "...For we must obey God rather than man" (Acts 5:29).
Intrinsic motivation: "But thanks be to God, that you who were once slaves of sin have become obedient from the heart to the standard of teaching to which you were committed" (Rom. 6:17).
Warning: "If anyone does not obey what we say in this letter, take note of that person, and have nothing to do with him, that he may be ashamed' (2 Thess. 3:14).
Dietrich Bonhoeffer said, "Only he who is obedient believes, and only he who believes is obedient." These two are linked together as in Hebrews 3:17-18: "And to whom did he swear that would not enter into his rest, but to those who were disobedient? And so we see that they were unable to enter because of unbelief." John 3:36 says, "Whoever believes in the Son has eternal life; whoever does not obey the Son shall not see life, but the wrath of God abides on him." These two are distinguished but not separated--they go hand in hand and are complementary or two sides of the same coin. Did not Abraham believe God and obey to leave Ur, and Noah obey to build the ark? "Faith without works is dead," and one must obey the gospel to be saved; to obey the gospel ("in flaming fire inflicting vengeance on those who do not know God and on those who do not obey the gospel of our Lord Jesus," according to 2 Thess. 1:8). is to repent and accept Christ as your personal Lord and Savior or trust in him for salvation (believing in the death, burial, and resurrection of Christ) and submit to His Lordship or ownership of your life.
You can disobey God and not lose your salvation. Salvation is not contingent or probational, but permanent and once for all ("He became the author of eternal salvation to all who obey him", says Heb. 5:9 "He who comes to Me I will in no wise cast out," says John 6:37). Contrary to what Romanists teach, there is a continuity in the state of grace after salvation and the permanency of our relationship and position in Christ doesn't change, though our experiential life in Christ does fluctuate. We cannot be unborn as a child of God. Jonah disobeyed God by going in the opposite direction. Moses disobeyed God and struck the rock twice instead of speaking to it (and consequently was not allowed to enter the Promised Land). The Bible doesn't gloss over King David's faults and mistakes and gross sins but shows us that even the best of us can fail on occasion--look at Solomon! As they say, "To err is human," and "Nobody is perfect." There is no such thing as sinless perfection or "entire sanctification." We are all works in progress and even Paul said he did not claim to have been there yet (at perfection referred to in Phil. 3:13, "...I do not claim to have laid claim of it yet...").
The Christian doesn't obey God out of some fear that he will lose his salvation but from gratitude. He does it because he wants to not because he has to. When you feel you have to, it is legalism. God says he will give us the heart to obey him. "And I will put my Spirit within you, and cause you to walk in my statutes and be careful to obey my rules" (Ezek. 36:27).
Many priests became obedient to the faith and got saved in Acts 6:7, and Paul talks about the obedience of faith. We obey God in the Spirit and not according to the Law. The Law kills but the Spirit gives life (2 Cor. 3:6). We become obedient from the heart because the true circumcision is in the heart (Rom. 2:29). "...so that we serve not under the old written code but in the new life of the Spirit" (Rom. 7:6). As Christians we learn to walk in the Spirit: "But if you are led by the Spirit, you are not under the Law" (Gal. 5:18). "And we are witnesses to these things, and so is the Holy Spirit, whom he has given to those who obey him," says Acts 5:32).
There is a great reward and there are many perks to being obedient: answered prayer, prosperity, success, family blessings, abundant life and the bearing of fruit. In Job they questioned whether it was profitable to obey God, but found out it was--God restored him twice his former worth. Psalm 19:11 says that "in keeping them [the law] there is great reward." 1 Sam. 15:22 sums it up as an exhortation: "To obey is better than sacrifice...." Jesus also said, "It is more blessed to give than to receive" (Acts 20:35). In God's economy, there are paradoxes: poverty comes before riches and trial before success. Even Jesus learned obedience through what he suffered (Heb. 5:8). "Bless the LORD, O my soul, and forget none of His benefits" (Psa. 103:2). God was angry at the people in Malachi who said that it was "vain to serve God" (Mal. 3:14). Isaiah 48:10 announces, "I am the LORD your God, who teaches you to profit, who leads you in the way you should go." Other passages that are food for thought are Psalm 1:3 and Joshua 1:8.
Israel had good intentions, but poor follow-through as they promised to obey the Law in Exodus 24:7 instead of asking for mercy, and ended up in disobedience. Jesus saw the disciples sleeping in the garden and said "the spirit is indeed willing but the flesh is weak"--recognizing human weakness, and not necessarily sin itself--in all its ugly colors. We all fall short of our ideals and standards, but that doesn't make us hypocrites (they pretend or make a show to impress their faith). Jesus talked in a parable of two brothers and asked which one obeyed. The one that finally decided to obey not the one who had good intentions. As they say, "The road to hell is carved with good intentions." sincerity counts but it is not everything: there are many sincere people who are lost. God is looking for "sincere," and "unfeigned faith" and not necessarily perfect faith (1 Tim. 1:5). "Lord, I believe, help my unbelief.," (cf. Mark 9:24). Soli Deo Gloria!