David is going through ‘the deep waters’ of suffering. He prays to the Lord for deliverance from ‘the flood’ and ‘the deep’(Psalm 69:14-15). He had sinned against the Lord. He does not try to hide this. He confesses his sin and guilt - ‘the wrongs that I have done are not hidden from You, my guilt is not hidden from You’(Psalm 69:5). He looks to the Lord, remembering that He is the God of ‘steadfast love’ and ‘abundant mercy’(Psalm 69:16). When you come to God in prayer, do not try to hide your sins from Him. Remember - ‘Christ Jesus came into the world to save sinners’. In Christ, there is ‘mercy’- God doesn’t send the judgment we deserve - and ‘grace’- God sends the blessing we don’t deserve. Come to Christ and receive His ‘mercy’ and ‘grace’(1 Timothy 1:13-16; Hebrews 4:14-16).