According to the apostle Peter, on the day of Pentecost just after Jesus' resurrection, Jesus received God's Holy Spirit after he was resurrected, and that he pours out this holy Spirit onto Christians - God pours out His Spirit though Jesus.
Referring to Joel 2:28 (WEB):
“It will happen afterward, that I will pour out my Spirit on all flesh; and your sons and your daughters will prophesy. Your old men will dream dreams. Your young men will see visions.
Peter said, Acts 2 (WEB):
32) This Jesus God raised up, to which we all are witnesses.
33) Being therefore exalted by the right hand of God, and having received from the Father the promise of the Holy Spirit, he has poured out this, which you now see and hear.
Paul also wrote - Titus 3 (ASV):
4) But when the kindness of God our Saviour, and his love toward man, appeared,
5) not by works done in righteousness, which we did ourselves, but according to his mercy he saved us, through the washing of regeneration and renewing of the Holy Spirit,
6) which he poured out upon us richly, through Jesus Christ our Saviour;