7 distinct Hebrew words appear in this verse.

Quoted or echoed by 1 later passage.

• Matt 13:35 · paraphrase
  "That it might be fulfilled which was spoken by the prophet, saying, I will open my mouth in parables; I will utter things which have been kept secret from the foundation of the world."
  Psalm 78: I will open my mouth in parables

• He Shall Speak in Parables
• Opens His Mouth in Parables (Psalm 78)

1 passage from patristic writers, Reformers, and church catechisms citing this verse.

• 1Cor 2:7 — But we speak the wisdom of God in a mystery, even the hidden wisdom, which God ordained before the world unto our glory:
• Deut 29:29 — The secret things belong unto the LORD our God: but those things which are revealed belong unto us and to our children for ever, that we may do all the words of this law.
• Ezek 24:3 — And utter a parable unto the rebellious house, and say unto them, Thus saith the Lord GOD; Set on a pot, set it on, and also pour water into it:
• Gen 18:19 — For I know him, that he will command his children and his household after him, and they shall keep the way of the LORD, to do justice and judgment; that the LORD may bring upon Abraham that which he h
• Job 27:1 — Moreover Job continued his parable, and said,
• Job 33:2 — Behold, now I have opened my mouth, my tongue hath spoken in my mouth.
• John 16:25 — These things have I spoken unto you in proverbs: but the time cometh, when I shall no more speak unto you in proverbs, but I shall shew you plainly of the Father.
• Mark 4:2 — And he taught them many things by parables, and said unto them in his doctrine,
• Mark 4:22 — For there is nothing hid, which shall not be manifested; neither was any thing kept secret, but that it should come abroad.
• Mark 4:34 — But without a parable spake he not unto them: and when they were alone, he expounded all things to his disciples.
• Matt 13:3 — And he spake many things unto them in parables, saying, Behold, a sower went forth to sow;
• Matt 13:11 — He answered and said unto them, Because it is given unto you to know the mysteries of the kingdom of heaven, but to them it is not given.
• Matt 13:34 — All these things spake Jesus unto the multitude in parables; and without a parable spake he not unto them:
• Matt 13:35 — That it might be fulfilled which was spoken by the prophet, saying, I will open my mouth in parables; I will utter things which have been kept secret from the foundation of the world.
• Num 23:7 — And he took up his parable, and said, Balak the king of Moab hath brought me from Aram, out of the mountains of the east, saying, Come, curse me Jacob, and come, defy Israel.
• Prov 1:6 — To understand a proverb, and the interpretation; the words of the wise, and their dark sayings.
• Prov 1:6 — To understand a proverb, and the interpretation; the words of the wise, and their dark sayings.
• Prov 18:4 — The words of a man’s mouth are as deep waters, and the wellspring of wisdom as a flowing brook.
• Ps 49:4 — I will incline mine ear to a parable: I will open my dark saying upon the harp.
• Ps 49:4 — I will incline mine ear to a parable: I will open my dark saying upon the harp.