Jehovah
For the eyes of the Lord are over the righteous, and his ears are open unto their prayers: but the face of the Lord is against them that do evil. 1 Peter 3:12
Peter quotes Psalm 34, where 'the Lord' is Jehovah, the premortal Christ, who watches over the righteous and hears their prayers.
How we know: the chapter heading names Him
- quotes Psalm 34:15-16 — 'The eyes of the LORD are upon the righteous, and his ears are open unto their cry'
