“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)

Eyes and ears are attributed to the LORD metaphorically. God is Spirit and yet the Scriptures attribute to Him human elements that we might better understand Who He is and how He acts as God. Of course, it is true that in Christ, God’s Eternal Son, these are the eyes and ears with which He appeared in the flesh. He is the visible image of the invisible God, Colossians 1:15.

God’s eyes are what He perceives and knows, not just as they appear but as they are. His ears represent His attentiveness to the cries of His children, called here, the “righteous.’’ There is none righteous, no not one, so this must then be those that God sees and hears as righteous (the justified ones) made so by the work of the LORD Jesus Christ on their behalf when He earned and established that righteousness and God, once for all, imputed it to their Spiritual account at the cross, Romans 5:1. God judges them righteous, not by any goodness or justice in them but by the imputation of that righteousness that the LORD Jesus finished in His perfect obedience unto death. Because God the Father loves the Son, He therefore is well pleased with His work of righteousness on behalf of those sinners for whom He sent Him into the world to save and has saved by His shed blood. Seeing that, by Him, His law was magnified and made honorable, therefore, His eyes behold with holy pleasure and delight those for whom He imputed that righteousness. His eyes are over them who are clothed in that perfect righteousness of the Son, in all-knowing love, care and protection.

“...His ears are open to their prayers”: or "prayer" in the Hebrew text, that is ‘to their cry.’ As a Father, ever tender to His children, they have God’s ear and He always answers according to His will, in His time and wisdom. He shall avenge His elect who cry unto Him day and night, Luke 18:7.