4 occurrences across the corpus

KJV Apocrypha (Catholic Deuterocanon)

Song of the Three Holy Children 1:13

To whom thou hast spoken and promised, that thou wouldest multiply their seed as the stars of heaven, and as the sand that lieth upon the seashore.

Jubilees

Jubilees 18:15

us to appear to speak to him in the name of the Lord. And he said: 'By Myself have I sworn, saith the Lord, Because thou hast done this thing, And hast not withheld thy son, thy beloved son, from Me, That in blessing I will bless thee, And in multiplying I will multiply thy seed As the stars of heaven, And as the sand which is on the seashore. And thy seed shall inherit the cities of its enemies,

OT Pseudepigrapha

The First Book of Adam and Eve 10:1

THEN God, merciful and gracious, looked upon them thus lying in the water, and nigh unto death, and sent an angel, who brought them out of the water, and laid them on the seashore as dead.

The First Book of Adam and Eve 50:7

Then came the Word of God and said unto him, "O Adam, take Eve and come to the seashore, where ye fasted before. There ye shall find skins of sheep, whose flesh was devoured by lions, and whose skins were left. Take them and make raiment for yourselves, and clothe yourselves withal."