Thank you for asking about 1 Timothy 4:4-5.
Here are a few thoughts that I hope will be helpful:
1 Timothy 4:3 Forbidding to marry, and commanding to abstain from meats (the word “meats” doesn’t necessitate flesh food. It many times means food in general. Notice these verses which DO use the word “flesh” that is eaten, “Romans 14:21 It is good neither to eat flesh, nor to drink wine, nor any thing whereby thy brother stumbleth, or is offended, or is made weak. 1Corinthians 8:13 Wherefore, if meat make my brother to offend, I will eat no flesh while the world standeth, lest I make my brother to offend.”), which God hath created to be received (with this clarification, WHICH God has created to be received, we can conclude that there are some foods which God has NOT created to be received. We could ask, after reading this text, “Which foods?”) with thanksgiving of them which believe and know the truth (“Thy Word is Truth…” John 17:17.).
1 Timothy 4:4 For every creature (WHICH God has created to be received) of God is good, and nothing to be refused, if it be received with thanksgiving:
1 Timothy 4:5 For it (whichever foods one is eating WHICH God has created to be received) is sanctified by the word (extremely important) of God and prayer.
If what we are eating is not “sanctified by the word,” then we are eating things WHICH GOD HAS NOT created to be received with thanksgiving. We are therefore not them which “know the truth,” as stated in verse 3.
All the other Bible verses fit into this context as well.
Here’s a sermon presented that I believe will be helpful as well:
God’s blessing to you!