II Samuel 22:29 Kabbalah

כִּֽי־אַתָּ֥ה נֵירִ֖י יְהוָ֑ה וַיהוָ֖ה יַגִּ֥יהַּ חָשְׁכִּֽי׃

For Thou art my lamp, O LORD; And the LORD doth lighten my darkness.

Read kabbalistic (mystical) interpretation of II Samuel 22:29: and classical mystical sources.