In answer:
"Therefore we must give praise unto God, for it is the light of His bounty which has shone upon us through His love which is everlasting. His divine Manifestations have offered their lives through love for us. Consider then what the love of God means. Were it not for the love of God all the spirits would be inanimate. The meaning of this is not physical death; nay, rather, it is that condition concerning which His Holiness Christ declared, "Let the dead bury their dead, for that which is born of the flesh is flesh, and that which is born of the spirit is spirit." Were it not for the love of God the hearts would not be illumined. Were it not for the love of God the pathway of the Kingdom would not be opened. Were it not for the love of God the holy books would not have been revealed. Were it not for the love of God the divine prophets would not have been sent to the world. The foundation of all these bestowals is the love of God. Therefore in the human world there is no greater power than the love of God. It is the love of God which has brought us together here tonight. It is the love of God which is affiliating the East and the West. It is the love of God which has resuscitated the world. Now we must offer thanks to God that such a great bestowal and effulgence has been revealed to us.
(Abdu'l-Baha, Foundations of World Unity, p. 90)
"After the death of Christ the disciples were troubled, and their ideas and thoughts were discordant and contradictory; later they became firm and united, and at the feast of Pentecost they gathered together and detached themselves from the things of this world. Disregarding themselves, they renounced their comfort and worldly happiness, sacrificing their body and soul to the Beloved, abandoning their houses, and becoming wanderers and homeless, even forgetting their own existence. Then they received the help of God, and the power of the Holy Spirit became manifested; the spirituality of Christ triumphed, and the love of God reigned. They were given help at that time and dispersed in different directions, teaching the Cause of God, and giving forth proofs and evidences.
So the descent of the Holy Spirit upon the Apostles means their attraction by the Christ Spirit, whereby they acquired stability and firmness. Through the spirit of the love of God they gained a new life, and they saw Christ 107 living, helping and protecting them. They were like drops, and they became seas; they were like feeble insects, and they became majestic eagles; they were weak and became powerful. They were like mirrors facing the sun; verily, some of the light became manifest in them."
(Abdu'l-Baha, Some Answered Questions, p. 106)
Regards,
Scott