whereas

conj. [ 1913 Webster ]

1. Considering that; it being the case that; since; -- used to introduce a preamble which is the basis of declarations, affirmations, commands, requests, or like, that follow. [ 1913 Webster ]

2. When in fact; while on the contrary; the case being in truth that; although; -- implying opposition to something that precedes; or implying recognition of facts, sometimes followed by a different statement, and sometimes by inferences or something consequent. [ 1913 Webster ]

Are not those found to be the greatest zealots who are most notoriously ignorant? whereas true zeal should always begin with true knowledge. Sprat. [ 1913 Webster ]