<p>13:17 <i>The God of this people Israel chose our fathers</i>- Paul's entire speech is based upon Stephen's in Acts 7 see commentary there. It was that witness from Stephen which had converted Saul / Paul; and he reflects that fact by likewise witnessing to others.</p><p><i>And exalted the people when they sojourned in the land of Egypt, </i><i>and with a high arm He led them out of it</i>- The prophets are clear that Israel worshipped idols in Egypt, and were not very responsive to God's salvation plans for them. The reference to exalting them therefore draws attention to God's grace towards Israel.</p>