"sealed in My stores": Sealed and lacking nothing. The righteous take nothing of what is theirs in this world, viz. (Proverbs 8:21) "And I shall fill their ('My lovers') stores," and (Psalms 31:20) "How abundant is Your good that You have stored away for those who fear You." When do both take (what is due them)? "Tomorrow," at the redemption, viz. (Devarim, Ibid. 35) "Mine is revenge and payment!"
"Mine is revenge and payment!": I, Myself exact payment of them, and I do so not through an angel and not through a messenger. As it is written (Shemoth 3:10) "Go and I shall send you to Pharaoh, etc.," and (II Kings 19:35) "And an angel of the L-rd went out and smote in the camp of Ashur, etc."