And he made a molten {o} sea, ten cubits from the one brim to the other: it was round all about, and his height was five cubits: and a line of thirty cubits did compass it round about.

(o) So called for the size of the vessel.

Wesley's Notes

7:23 A Sea - He melted the brass, and cast it into the form of a great vessel, for its vastness called a sea, which name is given by the Hebrews to all great collections of waters. The use of it was for the priests to wash their hands and feet, or other things as occasion required, with the water which they drew out of it.

King James Translators' Notes

from...: Heb. from his brim to his brim

Jamieson-Fausset-Brown Bible Commentary

23-26. he made a molten sea-In the tabernacle was no such vessel; the laver served the double purpose of washing the hands and feet of the priests as well as the parts of the sacrifices. But in the temple there were separate vessels provided for these offices. (See on [297]2Ch 4:6). The molten sea was an immense semicircular vase, measuring seventeen and a half feet in diameter, and being eight and three-fourths feet in depth. This, at three and a half inches in thickness, could not weigh less than from twenty-five to thirty tons in one solid casting-and held from sixteen thousand to twenty thousand gallons of water. [See on [298]2Ch 4:3.] The brim was all carved with lily work or flowers; and oxen were carved or cut on the outside all round, to the number of three hundred; and it stood on a pedestal of twelve oxen. These oxen must have been of considerable size, like the Assyrian bulls, so that their corresponding legs would give thickness or strength to support so great a weight for, when the vessel was filled with water, the whole weight would be about one hundred tons [Napier]. (See on [299]2Ch 4:3).

Matthew Henry's Concise Commentary

7:13-47 The two brazen pillars in the porch of the temple, some think, were to teach those that came to worship, to depend upon God only, for strength and establishment in all their religious exercises. Jachin, God will fix this roving mind. It is good that the heart be established with grace. Boaz, In him is our strength, who works in us both to will and to do. Spiritual strength and stability are found at the door of God's temple, where we must wait for the gifts of grace, in use of the means of grace. Spiritual priests and spiritual sacrifices must be washed in the laver of Christ's blood, and of regeneration. We must wash often, for we daily contract pollution. There are full means provided for our cleansing; so that if we have our lot for ever among the unclean it will be our own fault. Let us bless God for the fountain opened by the sacrifice of Christ for sin and for uncleanness.