1Thessalonians 4:8 He therefore that despises, despises not man, but God, who had also given unto us his holy Spirit.
The Old Testament saints and disciples of Christ had salvation (Ps. 51:12); the redemption (Ps. 31:5); grace (Ps. 84:11); physical healing (Ex. 15:26); names written in heaven (Ex. 32:32-33; Luke 10:20); the new birth (Gal. 4:28-30); conversion (Ps. 19:7); righteousness (Rom. 4:1-25); the gospel (Gal. 3:6-14; Heb. 4:2); justification (Rom. 4:1-25); holiness; (Acts 3:21; 2Pet. 1:21); pure hearts (Ps. 24:4); sanctification (Ex. 29:42-44; 31:13; Ezek. 20:2; John 15:3); and many other spiritual blessings before Pentecost (John 7:37-39; Acts 2:33).
Therefore, one should not take any of these blessings as evidence of a Spirit baptism. From all this, we gather that the Spirit baptism is the fullness of God in the lives of believers, not the Spirit by measure as in Old Testament times (John 3:34; 7:37-39; Acts 10:38; Isa. 61:1; Rom. 15:29; Eph. 3:19).
Different measures of the Spirit: the Mosaic portion (Num. 11:17, 25); the Mosaic portion divided into 71 portions (Num. 11:16-17, 11:25-29); the Elijah portion (2Kin. 2:9); a double portion (2Kin. 2:9-10); the Elijah portion on John the Baptist (Luke 1:15-17); the earnest of the Spirit (2Cor. 1:22; 5:5; 1Jn. 4:13; Php. 1:19); the Spirit “without measure” (John 3:34; Isa. 11:2; 42:1; 61:1; Luke 4:16-21; Acts 10:38); the Spirit baptism or baptismal measure (Matt. 3:11; 20:22-23; Luke 3:16; John 1:31-34; Acts 1:4-8; 2:1-21; 8:15-24; 10:44-48; 11:14-18; 15:7-11; 19:1-7; Gal. 3:14); the fulness of God (Eph. 3:19; Rom. 15:29); the rivers of living water (John 7:37-39); and the full anointing of the Spirit and enduement of power from on high (Luke 24:49; John 14:12-15).