"Whom shall he teach knowledge? and whom shall he make to understand doctrine? them that are weaned from the milk, and drawn from the breasts. For precept must be upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little."

It is the desire of the G-d of Israel that after we are saved/redeemed/delivered by His grace/mercy (chesed) through faith (emunah) that we grow in the knowledge (da’at) and understanding (binah) of the ways of His Kingdom "line upon line" and "precept upon precept." In doing so, the G-d of Israel desires that we grow from spiritual babies to spiritual maturity (tamim). In Hebrews 5:12-14 it is written:

"For when for the time ye ought to be teachers [rabbis], ye have need that one teach you again which be the first principles of the oracles of God; and are become such as have need of milk and not of strong meat. For every one that useth milk is unskillful in the word of righteousness: for he is a babe. But strong meat belongeth to them that are of full age, even those who by reason of use have their senses exercised to discern both good and evil."

What is the New Covenant?
Most members from the house of Israel (Christianity) associate the Old Testament (the Biblical name is TeNaKh - Torah, Prophets [Nevi’im], and Writings [Ketuvim — Luke 24:44]) with the Torah, but they do not associate the New Testament (Brit Hadashah) with the Torah. At the same time, most members from the house of Israel (Christianity) fail to realize that the BIBLE tells us that the New Testament (Brit Hadashah) is TORAH based !!

The New Covenant is Torah Based
The New Covenant (Brit Hadashah) is Torah based. In Jeremiah (Yermiyahu) 31:31, 33, it is written:

"Behold, the days come, saith the Lord, that I will make a NEW COVENANT with the house of Israel and with the house of Judah ... THIS SHALL BE THE COVENANT that I will make with the house of Israel; After those days, saith the Lord, I will put my law [TORAH] in their inward parts, and WRITE IT IN THEIR HEARTS; and will be their God, and they shall be my people."

The book of Hebrews confirms that the Holy Spirit (Ruach HaKodesh) is a witness that the New Covenant (Brit Hadashah) is the TORAH written upon our hearts. In Hebrews 10:15-16 it is written:

"Whereof the HOLY GHOST [SPIRIT] also IS A WITNESS to us: for after that he had said before, This is the covenant that I will make with them after those days, saith the Lord, I will put my laws [TORAH] into their hearts, and in their minds will I write them."