The expression of the Trinity is made throughout the entire Bible:
One God
1 Tim. 2:5; Deut. 4:35, 6:4; Is. 43:10-11.
Plurality of One God: Gen. 1:26; 3:22; 11:7; Is. 6:8.
Isa 9:6 shows the multiple persons of God as Father, Son, and Counsellor (a.k.a., Comforter, which Jesus said He would send to His disciples [John 15:26]).
The Father is God
Is. 6:3; 1 Cor. 8:6; John 17:1-3; 2 Cor. 1:3; Phil. 2:11; Col. 1:3; 1 Pet. 1:2; Matt. 6:8; 7:21; Gal. 1:1.
The Son is God
John 12:41; 5:18; 20:28; 1:1-14; 9:35-37; Titus 2:13; Rom. 9:5; 2 Pet. 1:1; Col. 2:9; Heb. 1:8-10; Rev. 1:8, 18; Is. 7:14; 45:21-22; Mic. 5:2; Matt. 1:23.
The Spirit is God
John 16:13; Heb. 9:14; Acts 5:3-4; 2 Cor. 3:17; John 15:26.
Who raised Jesus from the dead?
Father: Rom. 6:4; Acts 3:26; 1 Thess. 1:10.
Son: John 2:19-21; 10:17-18.
Spirit: Rom. 8:11.
God: Heb. 13:20; Acts 13:30; 17:31.
Who is God?
Father: Eph. 4:6.
Son: Titus 2:13; John 1:1; 20:28; 9:35-37.
Spirit: Gen. 1:2; Ps. 104:30.
God: Gen. 1:1; Heb. 11:3.
Who saves man?
Father: 1 Pet. 1:3.
Son: John 5:21; 4:14.
Spirit: John 3:6; Titus 3:5.
God: 1 John 3:9.
Who justifies man?
Father: Jer. 23:6; 2 Cor. 5:19.
Son: Rom. 5:9; 10:4; 2 Cor. 5:19, 21.
Spirit: 1 Cor. 6:11; Gal. 5:5.
God: Rom. 4:6; 9:33.
Who sanctifies man?
Father: Jude 1.
Son: Titus 2:14.
Spirit: 1 Pet. 1:2.
God: Ex. 31:13.
Persons of God do: Of the Father, by the Son, through the Spirit (1 Cor. 8:6; John 15:26).