full of. Hebrew "satisfied with". Supply "days" (not "years"), with Samaritan Pentateuch, Targum of Onkelos, The Targum of Jonathan ben Uzziel, Septuagint, and Syriac.
gathered to his people, an idiomatic Euphemism (App-6) for death and burial. Abraham's "people" were idolaters (Joshua 24:2). See note on 2 Samuel 12:23.