the good Shepherd = the Shepherd-the good [one]. Connect this with death, and Psa 22; connect the "great" Shepherd with resurrection (Heb_13:20), and Psa 23; and connect the "chief" Shepherd with glory (1Pe_5:4), and Psa 24.
giveth His life = layeth down His life. The expression is frequent in John. See verses: Joh_10:15, Joh_10:17, Joh_10:18; Joh_13:37, Joh_13:38; Joh_15:13. 1Jn_3:16. Agreeing with the presentation in this Gospel. See page 1511. Compare Mat_20:35. Mar_10:45.