34 They did not destroy the peoples, concerning whom the Lord had commanded them, 35 But they mingled with the Gentiles and learned their works; 36 They served their idols, which became a snare to them. 37 They even sacrificed their sons and their daughters to demons, 38 And shed innocent blood, the blood of their sons and daughters, whom they sacrificed to the idols of Canaan; And the land was polluted with blood. 39 Thus they were defiled by their own works, and played the harlot by their own deeds. (Psalm 106:34–39, NKJV)
When Israel entered the land of promise they were under commandment to destroy the nations of that land as the execution of God’s punishment against them (Leviticus 18:24-28). Because Israel was “a holy people to the Lord your God” they were not to marry them lest they learned and followed their terrible, idolatrous ways (Deuteronomy 7:1-6). Israel disobeyed the Lord and was influenced to join the nations in sinning against God and against their children. Christians are called out of the world, not to mingle with the world (1 Peter 2:9-10). Therefore, we must “abstain from fleshly lusts” and live differently than those who do not know God (1 Thessalonians 4:4-5). We cannot follow Jesus on Sunday and follow the world the rest of the week without being polluted and defiled by the world. Do not be deceived (1 Corinthians 15:33-34). Instead of mingling with the world let us separate ourselves from its sins, fear God and live holy lives (2 Corinthians 6:17-7:1; 1 Peter 1:15-16).