David
Psalm 18:23ESV·traditional attribution

I was blameless before him, and I kept myself from my guilt.

John Calvin Reformed @genevareformer

PSALM 18. We all know through what difficulties and almost insurmountable obstacles David came to the kingdom. Even to the time of Saul’s death he was a fugitive, and, as it were, an outlaw, and wearily passed his life in fear, amidst many threatenings and dangers of death.

Commenting on Psalm 18:1-50

C.H. Spurgeon Reformed Baptist @princeofpreachers

"I was also upright before him." Sincerity is here claimed; sincerity, such as would be accounted genuine before the bar of God. Whatever evil men might think of him, David felt that he had the good opinion of his God.

Matthew Henry Presbyterian @wholebiblehenry

Here, I. David reflects with comfort upon his own integrity, and rejoices in the testimony of his conscience that he had had his conversation in godly sincerity and not with fleshly wisdom, Co2 1:12. His deliverances were an evidence of this, and this was the great comfort of his deliverances.

Commenting on Psalm 18:20-28