"Hear, O Israel: The LORD our God, the LORD is one. You shall love the LORD your God with all your heart and with all your soul and with all your might." - Deuteronomy 6:4-5 ESV
This passage is an amazing piece of scripture. It is pointed to almost universally as the basis for monotheism (the belief in a singular deity). God uses different names to describe Himself to spectacular effect. The word LORD is Yahweh (Strong's H3068) and it is God's most personal name. Then there is God (Elohim H430) which is plural ('im' is a plural ending that means three or more). This singular God that you (Israel) has Is plural in nature but this LORD is also one (Echad H259) which is the same word used in Genesis 1:5 when the scripture speaks of the first day of creation.
This infinite God is one God who wants all of your heart, soul and might to overlap with who he Is.
That can't happen by our finite effort.
"And God is able to make all grace abound to you, so that having all sufficiency in all things at all times, you may abound in every good work." - 2 Corinthians 9:8 ESV
The good in 'good work' is agathos (G18) and it means useful or pleasant. Grace bridges God's infinite but singular nature with man's endlessness to produce sufficiency and usefulness.
Grace can fill our moments with sufficiency.
"The eternal God is your dwelling place, and underneath are the everlasting arms." - Deuteronomy 33:27a ESV
He is upholding all who have found Him to be a dwelling place. Jesus is the entrance to that shelter. One narrow door into the place where grace in all sufficient.