'Day' in the Bible

which has come to you, just as in all the world also it is constantly bearing fruit and increasing, even as it has been doing in you also since the day you heard of it and understood the grace of God in truth;

For this reason also, since the day we heard of it, we have not ceased to pray for you and to ask that you may be filled with the knowledge of His will in all spiritual wisdom and understanding,

Therefore no one is to act as your judge in regard to food or drink or in respect to a festival or a new moon or a Sabbath day—