While praying on Monday night I was reflecting on this verse and mulling over how 3 distinct persons can be One God. When trying to explain it to my son, I always used the egg analogy, but that is an imperfect analogy.
To make a long story short, this is how the Lord explained it to me:
We know Jesus is the Word who became flesh and that in Him and through Him were all things created. ( John 1:14; Colossians 1:16-17)
In the beginning, God spoke.
Father spoke, Jesus is that Word, and Holy Spirit is the breath which carried the Word.
Man often speaks out of turn and inappropriately. We say things we don’t mean, things we shouldn’t, things which are not true and things we later retract.
God is not like that. When He speaks, it is deliberate and always True.
The entirety of Your word is truth, And every one of Your righteous judgments endures forever.
Psalms 119:160 NKJV
We also know that as a man thinks in his heart, so is he. (Proverbs 23:7)
But those things which proceed out of the mouth come from the heart, and they defile a man.
Matthew 15:18 NKJV
Jesus, the Word, is the very heart of God (Father). We know God is love and Jesus is the expression of that Love, become flesh, and poured out on the cross.
I am not sure if I explained this well, but when the Lord showed it to me it made perfect sense.