Note 6 at Acts 13:21: Saul was the first king of Israel. Saul started out with great humility (1 Sam. 10:21-23, 27; 15:17) but quickly became lifted up in pride (Pro. 16:18) and was rejected by God as being Israel's king (1 Sam. 15:23-29). The Lord chose David as Saul's replacement.

Note 7 at Acts 13:21: This is the only place in scripture that the length of Saul's reign is given. The first century Jewish historian Josephus, also ascribed forty years as the length of Saul's reign (Antiq. vi. 14, 9). Just as in Stephen's account of Jewish history (see note 2 at Acts 7:2, p. 604), this is a very important piece of information that fills a gap in the Old Testament historical account.