"God calls upon us to make use of every opportunity for securing a preparation for His work. He expects you to put all your energies into its performance and to keep your hearts alive to its sacredness and its fearful responsibilities. God's eye is upon you. It is not safe for any one of you to bring into His presence a marred sacrifice, a sacrifice that costs neither study nor prayer. Such an offering He cannot accept. 7T 189.4"
"And if ye offer the blind for sacrifice, is it not evil? and if ye offer the lame and sick, is it not evil? offer it now unto thy governor; will he be pleased with thee, or accept thy person? saith the Lord of hosts."
Both passages emphasize the importance of offering acceptable sacrifices to God. Malachi 1:8 condemns offering blind, lame, or sick animals, while the EGW passage condemns offering sacrifices that lack study and prayer. The underlying theme of offering one's best to God connects the two.