Each and every
Definition 1 of 1
Pro Tip 1/3Unwavering Importance
Stresses the importance of each member or part of a group with strong emphasis. 
Each and every vote counts in a democracy.
Pro Tip 2/3Non-negotiable
Implies that there's no room for exceptions; often used for rules or processes. 
Each and every step of the safety protocol must be followed.
Pro Tip 3/3Enhanced Focus
Draws the listener's attention to the individuality and significance of each item or person. 
Our chef inspects each and every ingredient for freshness.