Actually, that's not true. This is passed along quite a bit and usually it's in reference to 1 Corinthians 10:13. However, this verse is referring to 'temptations". God does allow more than we can handle, but nothing that HE cannot handle. This is why Jesus asks if your burdens are too heavy and then says, Give them to me and I will carry them for you. He warns us that there will be times that things in life will become unbearable, but if we magnify Him and not our problems, He will overcome them. He will give us the strength, wisdom, etc. that we need to not only survive our difficulties, but to triumph over them.