When he was exhorted to think seriously of making his peace with God, he replied 'twas done and he was sure of going to Heaven.
I earnestly exhort and beg of all here present to think seriously of eternity--a long and endless eternity!
Ebn Thaher, shocked at the obstinacy of the prince of Persia, left him hastily, and going to his own house, recalled his former reflections, and began to think seriously what he should do.
Think seriously of what I say, and do not fancy things that are not, nor ever can be.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "think seriously" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.