'Strength' in the Bible

He held seven stars in his right hand, and a sharp double-edged sword extended out of his mouth. His face shone like the sun shining at full strength.

I know your deeds. (Look! I have put in front of you an open door that no one can shut.) I know that you have little strength, but you have obeyed my word and have not denied my name.

saying, "Amen! Praise and glory, and wisdom and thanksgiving, and honor and power and strength be to our God for ever and ever. Amen!"