Father. See John 1:14 and and App-98. Fifteen times the Lord used this term in prayer (omitting parallel passages in brackets): Matthew 11:25; Matthew 11:26 (Luke 10:21); Joh 26:39, Joh 26:42 (Mark 14:36; Luke 22:42). Joh 23:34, Joh 23:46. John 11:41; John 12:27; John 12:28; John 17:1; John 17:5; John 17:11; John 17:21; John 17:24; John 17:25 (15. 3x5. App-6). Next to John 17, this is the longest prayer recorded of our Lord.
hast heard . heardest (Aorist tense). This suggests that the prayer was heard and answered before, perhaps in Peraea. See John 11:4.