Knowing ourselves imparts sincerity of heart

“But You delight in sincerity of heart, and in secret You teach me wisdom.” Psalm 51:6

The saints teach us that two kinds of knowledge are necessary for persevering in God's grace - the one is knowledge of God, and the other, the knowledge of oneself. The virtue mentioned in today's Scripture is concerned with knowledge of ourselves. The knowledge of our littleness, weakness and sinful nature impart sincerity of heart towards God. Without this knowledge, we can become vain, blind, short-sighted and puffed up in thinking.