- The Lord frequently changes his mind in the light of changing circumstances, or as a result of prayer (Exod. 32:14; Num. 14:12–20; Deut. 9:13–14, 18–20, 25; 1 Sam. 2:27–36; 2 Kings 20:1–7; 1 Chron. 21:15; Jer. 26:19; Ezek. 20:5–22; Amos 7:1–6; Jonah 1:2; 3:2, 4–10). At other times he explicitly states that he will change his mind if circumstances change (Jer. 18:7–11; 26:2–3; Ezek. 33:13–15). This willingness to change is portrayed as one of God’s attributes of greatness (Joel 2:13–14; Jonah 4:2). If the future were exhaustively and eternally settled, as classical theism teaches, it would be impossible for God to genuinely change his mind about matters.
- God sometimes expresses regret and disappointment over how things turned out—even occasionally over things that resulted from his own will. (Gen. 6:5–6; 1 Sam. 15:10, 35; Ezek. 22:29–31). If the future was exhaustively and eternally settled, it would be impossible for God to genuinely regret how some of his own decisions turned out.
- At other times God tells us that he is surprised at how things turned out because he expected a different outcome (Isa. 5:3–7; Jer. 3:67; 19–20). If the future were eternally and exhaustively settled, everything would come to pass exactly as God eternally knew or determined it to be.
- The Lord frequently tests his people to find out whether they’ll remain faithful to him (Gen. 22:12; Exod. 16:4; Deut. 8:2; 13:1–3; Judges 2:20–3:5; 2 Chron. 32:31). If the future were eternally and exhaustively settled, God could not genuinely say he tests people “to know” whether they’ll be faithful or not.
- The Lord sometimes asks non-rhetorical questions about the future (Num. 14:11; Hos. 8:5) and speaks to people in terms of what may or may not happen (Exod. 3:18–4:9; 13:17; Jer. 38:17–18, 20–21, 23; Ezek. 12:1–3). If the future were exhaustively and eternally settled, God could never genuinely speak about the future in terms of what “may” or “may not” happen.
source: Gregory Boyd, “Greg Boyd Gives 5 Bullet Points about Open Theism in the Bible” (patheos).