The Creed states that Jesus is consubstantial with the Father (6th Ecumenical Council). But did you know that all three persons are consubstantial (8th Ecumenical Council)? The three Persons each fully possess the one Divine Nature. So they have the same substance or nature. Then Jesus is also consubstantial with us, as he is fully human as well as fully God. Consubstantial means having the same substance or nature.
What this implies is that anything said about the Divine Nature, is true about each Person. God is Love, and so each Person is Love. It is heresy to say that only the Holy Spirit is Love, or that only the Son is Knowledge, etc. Each Person has all the attributes that we discern in the one Nature.
But on that point, the one Nature is so fully one, that in God, Love, Truth, Mercy, Justice, Knowledge, and even Existence is exactly the same. For each of these things, when extended to infinite perfection is the same as the other.