What is the biblical basis for Christ's atonement being infinite?

From the [Cannons of Dort](https://www.crcna.org/welcome/beliefs/confessions/canons-dort) 2nd Point of Doctrine, Article III > This death of God’s Son is the only and entirely complete sacrifice and satisfaction for sins; it is of infinite value and worth, more than sufficient to atone for the sins of the whole world. This is from a Calvinist perspective, but I assume that most Christians hold that Christ's atonement for man is infinite and unlimited in time and in power. My question is about where this belief was sourced from. Is it somewhere I don't know about in the bible or from early Christian creeds/councils? What is the origin of the belief of an infinite atonement?