One in Messiah Congregation

The verses below are the same in the Stone Chumash & Tanach

Kosher means blessed by a rabbi, which is not scriptural. The scriptures below are not saying don't eat milk or milk products with meat.

Exod.23[ 19] The first of the firstfruits of thy land thou shalt bring into the house of the LORD thy God. Thou shalt not seethe a kid in his mother's milk.

Exod.34[ 26] The first of the firstfruits of thy land thou shalt bring unto the house of the LORD thy God. Thou shalt not seethe a kid in his mother's milk.

Deut.14[ 21] Ye shall not eat of any thing that dieth of itself: thou shalt give it unto the stranger that is in thy gates, that he may eat it; or thou mayest sell it unto an alien: for thou art an holy people unto the LORD thy God. Thou shalt not seethe a kid in his mother's milk.

The Lord, Abraham and David ate milk and meat:

Gen.18[ 1] And the LORD appeared unto him in the plains of Mamre: and he sat in the tent door in the heat of the day;
[2] And he lift up his eyes and looked, and, lo, three men stood by him : and when he saw them, he ran to meet them from the tent door, and bowed himself toward the ground ,[3] And said, My Lord, if now I have found favour in thy sight, pass not away, I pray thee, from thy servant:[ 4] Let a little water, I pray you, be fetched, and wash your feet, and rest yourselves under the tree:[ 5] And I will fetch a morsel of bread, and comfort ye your hearts; after that ye shall pass on: for therefore are ye come to your servant. And they said, So do, as thou hast said.[ 6] And Abraham hastened into the tent unto Sarah, and said, Make ready quickly three measures of fine meal, knead it, and make cakes upon the hearth.[7 ] And Abraham ran unto the herd, and fetcht a calf tender and good, and gave it unto a young man; and he hasted to dress it.[8] And he took butter, and milk, and the calf which he had dressed, and set it before them; and he stood by them under the tree, and they did eat.

King David and his men ate milk and meat:

2Sam.17[ 27] And it came to pass, when David was come to Mahanaim, that Shobi the son of Nahash of Rabbah of the children of Ammon, and Machir the son of Ammiel of Lo-debar, and Barzillai the Gileadite of Rogelim,[28] Brought beds, and basons, and earthen vessels, and wheat, and barley, and flour, and parched corn, and beans, and lentiles, and parched pulse,[29 ] And honey, and butter, and sheep, and cheese of kine, for David, and for the people that were with him, to eat: for they said, The people is hungry, and weary, and thirsty, in the wilderness.