Sentence:  [T]hou keepeſt thy Flock under the ſhadow of thy Wing, and nouriſheſt them with the choiceſt Food; thou guideſt with the hand of thy Power, and <WSD>ſuccoureſt</WSD> them at every needful time, and thou relieveſt their greateſt wants: [...] 
Meaning of the word marked with <WSD> tags:  To give aid, assistance, or help.