the one

Leviticus 5:7-10
If, however, he cannot afford a lamb, he may bring to the LORD as restitution for his sin two turtledoves or two young pigeons--one as a sin offering and the other as a burnt offering. . . .

Leviticus 14:19, 20, 30, 31
Then the priest is to sacrifice the sin offering and make atonement for the one to be cleansed from his uncleanness. After that, the priest shall slaughter the burnt offering . . .

an atonement

Leviticus 4:20, 26, 31, 35
He shall offer this bull just as he did the bull for the sin offering; in this way the priest will make atonement on their behalf, and they will be forgiven. . . .

Leviticus 12:7
And the priest will present them before the LORD and make atonement for her; and she shall be cleansed from her flow of blood. This is the law for a woman giving birth, whether to a male or female.

Leviticus 14:18
The rest of the oil in his palm, the priest is to put on the head of the one to be cleansed, to make atonement for him before the LORD.

Numbers 15:25
The priest is to make atonement for the entire congregation of Israel, so that they may be forgiven; for the sin was unintentional, and they have brought to the LORD an offering made by fire and a sin offering, presented before the LORD for their unintentional sin.

Numbers 25:13
It will be a covenant of permanent priesthood for him and his descendants, because he was zealous for his God and made atonement for the Israelites."

Matthew 3:17
And a voice from heaven said, "This is My beloved Son, in whom I am well pleased!"

Ephesians 1:6
to the praise of His glorious grace, which He has freely given us in the Beloved One.

Hebrews 1:3
The Son is the radiance of God's glory and the exact representation of His nature, upholding all things by His powerful word. After He had provided purification for sins, He sat down at the right hand of the Majesty on high.