30 Truly, these times of ignorance God overlooked, but now commands all men everywhere to repent, 31 because He has appointed a day on which He will judge the world in righteousness by the Man whom He has ordained. He has given assurance of this to all by raising Him from the dead. (Acts 17:30–31, NKJV)
This passage does not excuse or encourage sins committed out of ignorance. Indeed, it plainly says that God “now commands all men everywhere to repent” of their sins – including sins of ignorance. This verse does acknowledge the forbearance of God, who mercifully gives sinners time to repent before interposing His just penalty against their sins (see Acts 14:16-17). Ignorance will not be an acceptable defense to free us from our sins and their wages (which is death, Rom. 6:23). God’s command to repent is merciful, since it seeks to prepare us for the coming day of judgment. Additionally, God has assured us of the future judgment by raising from the dead His appointed judge; Jesus Christ. Escaping eternal punishment on Judgment Day is a compelling motive to repent of our sins. God has been very clear. He will impose His punishment “on those who do not know God, and on those who do not obey the gospel of our Lord Jesus Christ” (2 Thess. 1:8). Are you ready for the Judgment Day? Now is the day of salvation in Christ (2 Cor. 6:2; Acts 4:12).