I will

Psalm 49:4
I will incline my ear to a proverb; I will express my riddle with the harp:

Matthew 13:13, 34, 35
This is why I speak to them in parables: 'Though seeing, they do not see; though hearing, they do not hear or understand.' . . .

dark sayings

Proverbs 1:6
to understand the proverbs and parables, the sayings and riddles of the wise.

Matthew 13:11-13
He replied, "The knowledge of the mysteries of the kingdom of heaven has been given to you, but not to them. . . .

Mark 4:34
He did not say anything to them without a parable. But privately He explained all things to His own disciples.