A.T. Robertson Commentary John 14:23

"Jesus answered and said unto him, If a man love me, he will keep my word: and my Father will love him, and we will come unto him, and make our abode with him." — John 14:23 (ASV)

If a man love me (εαν τις αγαπα με). Condition of third class with εαν and present active subjunctive, "if one keep on loving me." That is key to the spiritual manifestation (εμφανιζω).

We will come (ελευσομεθα). Future middle of ερχομα and first person plural (the Father and I), not at the judgment, but here and now.

And make our abode with him (κα μονην παρ' αυτω ποιησομεθα). See verse 2 for the word μονη (dwelling, abiding place). If the Holy Spirit "abides" (μενε, verse 17) in you, that heart becomes a temple (ναος) of the Holy Spirit (1 Corinthians 3:16f.), and so a fit dwelling place for the Father and the Son, a glorious and uplifting reality.