Love God Mark 12:29

When asked, Jesus brought the foremost command: "Love God, With all your heart, with all your soul, with all your mind, with all your strength" from Deuteronomy 6:4-5 (originally written in Hebrew), with Jesus's words written in Greek in Mark 12:29-30.
Jesus then added, though unasked ☺, the second command "and your neighbour as yourself" from Leviticus 19:18.

And Jesus answered him, The first of all the commandments is, Hear O Israel; The Lord our God is one Lord:

And you shall love the Lord your God with all your heart (Heb) (Gk), and with all your soul (Heb) (Gk), and with all your mind (Gk only), and with all your strength (Heb) (Gk): this is the first commandment.

And the second is like, namely this , you shall love your neighbour as yourself. There is no other commandment greater than these.

In the original Hebrew, the heart is that which is "enclosed" within the body - the most hidden organ - As a person thinks in their heart, so is he / she ---- Guard your heart with all diligence, for out of it are the issues of life --- a person's heart devises their way, but God fixes their steps --- and God's word penetrates deep inside, sharper than any two-edged sword, separating soul from spirit, and judging / distinguishing the inner passions — deliberations and planning of the heart.
The soul is derived from the word for "breath" - i.e. the outward, refreshed expression of a person - contrasted with the word for spirit - derived from an active word in both Hebrew and Greek which means "to blow upon" — with God's intention that the words spoken by the human soul may reflect the action of God's Holy Spirit via their human spirit "My soul does magnify the Lord and my spirit has rejoiced in God my Saviour." Luke 1:46. A partnership, a fellowship.
The word for mind here is "Deep knowing or nous " - linked a couple of verses later in Mark to Understanding - "getting it together" i.e. Comprehending
And the word for strength here is "forceful ability"

So, at the end of it all, to paraphrase, "With all your inward passion and planning — future expectations, with all your outward expression lifestyle and speech — living in the present, with all your inward knowing and comprehension — from past experiences and teaching, with all your outward strength and talents, love the Lord your God — and your neighbour — the one who is in need and is near by, as yourself.