God definitely chooses who will serve him. (Jn 15:16; Acts 15:14; Rom 8:33; Rom 11:5; 1 Cor 1:27-28; Eph 1:4; 2 Th 2:13; 1 Pt 1:2; 1 Pt 1:20; 1 Pt 2:9; Rev 17:14) But is human will is also at work? Does God allow each human to make or decide their own decisions or choices? Do humans really have free will? Bible examples and principles such as the following make the answers to these questions clear:
God warned Adam of the consequences of eating from a certain tree. (Gen 2:16-17)
“If you do what is right, will you not be accepted?” But if you do not do what is right, sin is crouching at your door.” (Gen 4:7 NIV) God warned Cain. His language indicates Cain had a choice.