"Wherefore if they shall say unto you, Behold, he is in the desert; go not forth: behold, he is in the secret chambers; believe it not." (Matthew 24:26)
The above warning was given by Christ in His famous Olivet discourse about His future second coming, right after He had predicted that many "false Christs" would first come, deceiving many (v. 24). That prediction has been fulfilled many times during the following centuries, but He Himself has not yet returned, in spite of the claims of these latter days.
However, His present location is no secret. After His resurrection and final instructions to His disciples, "he was received up into heaven, and sat on the right hand of God" (Mark 16:19). We must remember that He arose bodily from the grave, then ascended bodily to God's throne, and that "this same Jesus, which is taken up from you into heaven" (Acts 1:11) will return. Until He returns, therefore, He is seated bodily at the right hand of the presence of the triune God in heaven. In fact, there are no less than 21 references in the Bible to the Lord Jesus now being at the right hand of God.
It is not strictly correct to say or sing that Jesus can come into our hearts, unless it is clearly understood that He is there symbolically in the presence of the indwelling Spirit of Christ. In this way, "God hath sent forth the Spirit of his Son into your hearts" (Galatians 4:6), so that "Christ may dwell in your hearts by faith" (Ephesians 3:17).
In the physical sense, however, the Lord Jesus Christ, still in His physical, but now immortal, body, is at "the right hand of the Majesty on high" (Hebrews 1:3) and will remain there until He returns physically back to fulfill all the remaining promises in the Scriptures and to establish the kingdom for which He created us. HMM