Act 1:4 And, being assembled together with them, commanded them that they should not depart from Jerusalem, but wait for the promise of the Father, which, saith he, ye have heard of me.
Act 1:5 For John truly baptized with water; but ye shall be baptized with the Holy Ghost not many days hence.
The Holy Spirit is described as the promise of the father. His coming upon the life of the believer is the fulfilment of the chief of all promises which God made. His presence in us has made us become partakers of God's divine nature.
Peter tells us in the scripture below that born again believers have been given access to God's Divine Nature through the exceeding great promises which God made to us. The most important of the promises which God made is the promise of the Spirit.
2Pe 1:3 According as his divine power hath given unto us all things that pertain unto life and godliness, through the knowledge of him that hath called us to glory and virtue:
2Pe 1:4 Whereby are given unto us exceeding great and precious promises: that by these ye might be partakers of the divine nature, having escaped the corruption that is in the world through lust.
The Holy Spirit in us has brought God's divine nature to us. Now we have become God-like through His presence in us. God's ability and power is now at work in us because the Holy Spirit dwells in us. The more we get filled with the spirit the more Heaven takes over our earthly house of this tabernacle.
Jesus commanded the disciples to wait for the promise of the Holy Spirit. Waiting implies spending time in the presence of God desiring an infilling with the Holy Spirit. The Holy Spirit comes strictly upon those who yearn and long for Him. He is on earth today and desires to fill every believer daily. However to experience His infilling there has to be an expectation and a longing for His infilling. God's Divine nature can manifest in you today if the Holy Spirit fills you to saturation.