This is the real "gotcha" phrase of christianity.
John 3:16 For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.
True, this must mean that you must take up a faith in Jesus so that you have "eternal life", correct. They will tell you so.
But does G-d really "love the world". I attest that he does not.
G-d loves CREATION. The world is something else.
So if you want to read hokey bible verses and think that G-d is writing you a future in heaven just by swearing allegiance to a man that exists only in writing (in my beliefs), go right ahead.
If you read this verse after knowing the Bible of G-d that was from Genesis to Chronicles 2, you are going to be keenly aware that this is not Hashems work and that Hashem does not indeed "love the world". The world is the enemy in many ways. The fact is that the world is what corrupts, what disfigures, what assaults and what demeans the very existence of the orderly man of Torah.
So good luck being a Jews for Jesus if that is your nature. This verse will not give you anything except your own smug satisfaction of posting it on a billboard for some jew like me to discover some day and look up in the bible to see what could be "so important".